## How do you calculate neutral load in single phase?

The neutral load can be calculated by **multiplying the maximum demand by 70 percent** (25 × 70% = 17.5 kW). The neutral load for 10 12-kW household electric ranges is 17.5 kW (see Figure 4).

## How do you calculate neutral current in an imbalanced load?

Note the neutral formula. If A, B and C are the three phase currents, the formula to find the neutral current is the square root of the following: **(A^2 + B^2 + C^2 – AB – AC – BC)**.

## How do you size a neutral?

Sizing the neutral: Sec. 220-22. **You must size the neutral conductor to carry the maximum unbalanced current in the circuit** (i.e. the largest load between the neutral and any one ungrounded phase conductor). You calculate the first 200A of neutral current at 100%.

## How much current does neutral carry?

On any individual circuit (lamp or 120V outlet) the current in the neutral in that circuit is **equal to the current in the “hot” wire**.

## Does neutral have current in single phase?

**In single-phase, loads the neutral wire provides the return path for the current**, and in balanced 3 phase loads, because they satisfy the above criteria, the currents enter and return through lines creating 0A of out of balance current. So, there is no need for a neutral wire.